Door-spring



M.A.KALT0M DOOR SPRING.

APPLICATION FILED JUNE 7. 1920. 1 ,8,54, 1 96, Patented Sept. 28, 1920.

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Specification of Letters Patent. Patented Spt. 28 1920.

Application led June 7, 1920. Serial No. 387,265.

nection with doors which are in almost continuous use, spring means being provided for closing the doors.

It is a well known fact that under vcontinued use, the door spring lasts but a short time, and one object oi the invention, therefore, is to provide a spring-closin(T means for a door, which will withstand severe usage to which devices of this kind are subjected commonly. A

The invention aims to provide novel means whereby a spring may be supported and protected, novel means being supplied for putting the spring under compression, and novel means being included whereby the device may be adj usted'to cooperate with the door which is to be closed.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the 'precise embodiment ot the invention shown can be made without departing from the spirit of the invention.

1n the accompanying drawings Figure lshows in elevation, a portion oi a door fra-ine and a door, whereunto the structure forming the subject matter oi' this applicationhas been applied; Fig. 2 is a section on the line 2-2 of Fig. 1; and Fig. 3 is a section on the line 3-3 of Fig. 2.

In the drawings, there appears a door trame comprising a j amb 1 and a lintel 5. A door appears at 2 and is hinged at 3 to the jamb 1, the door being supplied on its sides, and at its upper edge, with wear strips 4.

The invention embodies a bracket, denoted renerally by the numeral 6, the bracket emiodying a base 7, a top plate 8 which is aproXiniatel.T semi-circular, and a bottom ila-nge 9, theflange 9 terminating short of one end of the base 7 for a purpose to be described hereinafter.

p The numeral 10 denotes an arm including a base 11., triangular sides 12 and an end 14, this particular shape serving to give the aria great strength. The arm extends between the flange 9 and the top plate 8 of the bracket 6, the sides 12 of the arm being connected to the flange and the top plate by a pivot element 15.V The base 11 of the arm 10 is provided with a depending lip 18 and it is the purpose of accommodating this lip that the flan ge 9 of the bracket 6 terminates short or' one end of the bracket, as aforesaid. An adJust-able abutment, such as a screw 19. is located in the lip 18 and is held therein by nuts 20. The. abutmentl) is adapted to be engaged by one of the wear strips l on the door 2, and it will be clear that by shittin0r the nuts 2O on the screw 19. the position otl' the screw with respect to the door may be altered, thereby adapting the device to varying conditions.

The numeral 16 denotes an arcuate support, having its ends extended through the base 7 of the bracket 6. One end ofthe support 16 kengages the inner surface of the base 7, as indicated at 22. A securing element 23 extends through the top plate 8 ot the bracket 6 and through the liange 9 thereof, the securing element passing through the arcuate support 16. That end of the arcuate support. 16 which is adiacent to the securing element 23, may be. extended, as shown at 24, through the base 7, into the jamb 1, to aid in anchoring the bracket in place. The base 7 OiC the bracket 6 is provided, as shown in Fig. 3, with an opening 30, through which the end 22 of the support 16 extends, the base 11 of the arm 10 having an opening 31 which receives the support 16, the arm thus being slidably mounted on the support. A helical compression spring surrounds the support 6, the spring being denoted by the numeral 21. One end of the spring abuts a securing element 23, and the other end of the spring abuts against the base 11 of the arm 10. When the door is swung on the hinge 3, the door bears against the abutment 19, and the arm 12 is swung on the pivot element 15, the spring 21 being put under compression. Obviously, the spring 21 reacts on the arm 12 to move the door to a closed position. It is to be observed that the top plate 8 of the bracket is of suicient size to extend above and to shield both the arcuate support and the spring 21 which is mounted thereon.

Y Having thus described the invention, what is claimed is l. In a device of the class described, a

door frame; a hinged door; a bracket carried-by the frame; an arm pivoted to theVV bracket and having a depending lip; an arcuate support connected at its ends Vto the bracket,`the arm being slidable on the supportga compression spring on the support and abutting atone end against the arm; a

stop adjustable in the lip Vand located in the path of the door; and means for holdingthe top in adjusted positions in thelip.

- including a top Vplate* of suliicientisize to Y 2. In a device of theclass described, a door frame; a hinged door; a bracket carried by the frame; an arcuate support connectedat its ends tothe bracket, the bracket shield the support, and a bottom flange be vlovv the support; 'an arm extendedbetween vrthe top plate and the flange and slidable on the support; a pivot element mounted in the topplateand in the flange and constituting a mounting 'for the arm`; a spring on the support andabutting against the arm; an

adjustable Stop on the arni and lying in the Y path of the door; and means for holding the stop in adjustedV positions on the arm.

3, In a device ofthe class described,V a door frame; a hinged door; ia bracket carried by the frame; an arcuate support con- Y nected at its ends tothe bracket, the bracket fincluding aV top plate of sufficient size to -shield the support, and a bottom flange beand a lip projecting from the basey of the arm, the lip lying in the'path ofthe door@ VIn testimony` that I claim the foregoing as iny own, I have hereto affixed my signature inthe presence of tWo Witnesses. Y

. MARTIN A. KALTON. Witnesses:

O. I-I. BARDILL, Y EDWINA. MERRILL.Y 

